Slip-over distribution cabinet

ABSTRACT

The invention relates to a distribution cabinet which is usually set up outdoors and accommodates the technical, for example electrical or optical, distribution installations for, for example, weak-current systems, for example telephone systems, with associated power-supply devices and cable-terminal/connection devices for a certain area, and also to a method for exchanging, in particular increasing the size of, the body of a distribution cabinet, the exchange of which body is unproblematical and with which method the distribution cabinet remains at the original location and consequently no new installation approval or construction approval is necessary. This takes place by a method for exchanging, in particular increasing the size of, the body of a distribution cabinet set up outdoors in which the body of the old distribution cabinet is removed, a new base, which is hollow when viewed in plan view, is slipped over the old installation frame and the old base and set down on the underlying ground and aligned, and a new body, which has at least as much interior space as the old body, is slipped from above over the old installation frame, aligned and fastened.

APPLICATION AREA

The invention relates to a distribution cabinet which is usually set upoutdoors and accommodates the technical, for example electrical oroptical, distribution installations for, for example, weak-currentsystems, for example telephone systems, with associated power-supplydevices and cable-terminal/connection devices for a certain area.

TECHNICAL BACKGROUND

Nowadays—in addition to having sufficient structural stability andresistance to vandalism, etc.—such distribution cabinets have to satisfyfurther requirements, for example excessive electromagnetic radiationmust not be emitted to the surroundings, and, for use in warmercountries in particular, the temperatures in the interior of thedistribution cabinet must not rise to too high a level, despite theheat-emitting electrical subassemblies accommodated there, nor must theydrop to too low a level.

Such distribution cabinets are, in principle, produced either from metalor from plastic, plastic combining the advantage of less expensiveproduction with the advantage of an electrically non-conductivematerial, with the result that, even in the case of unplanned contactbeing established between the housing of the distribution cabinet and anelectrical component, there is never the risk of a person who touchesthe housing from the outside receiving an electric shock.

As far as the sufficient cooling capability of such distributioncabinets is concerned, it is already known for cooling to be effected byair circulation. For this purpose, the body is of a double-walledconfiguration, the ambient air being able to circulate in theintermediate space between the walls, that is to say enter at the bottomand leave at the top, whereby on the one hand heating-up of the interiorby sunlight is prevented and on the other hand heat dissipation iseffected at the inner wall, which is heated up by the electricalsubassemblies in the main space.

In addition, modern distribution cabinets are made EMC-proof, with theconsequent result that electromagnetic emission to the outside can onlytake place within the prescribed limit values.

Some of such distribution cabinets are on private property, but they areoften also on public property, so that the respective local authoritieshave to grant approval for such a distribution cabinet to be installed.As long as the telecommunication companies were also state-owned, thisrarely presented any problems; with increasing privatization, theauthorities are refusing installation or demand a fee for installation,quite apart from the fact that an approval procedure has to be undergoneand takes considerable time.

This problem arises in the case of all distribution cabinets that are tobe newly installed, that is to say in particular in development areas,or if there is no longer any space available for technical components,in particular electrical components, in an existing distribution cabinetand a further distribution cabinet should be additionally set upalongside it.

A further, technical problem exists when an existing distributioncabinet is replaced for technical reasons, that is to say for example ifthe body of an already existing distribution cabinet has to be exchangedto improve the EMC-proof shielding or the cooling capability.

At the same time, it must be remembered that a distribution cabinetgenerally rests on a base buried deep in the ground, usually made ofconcrete, latterly also of plastic, into which the buried cables leadingto the distribution cabinet and away from it again are led from below,and to which both the usually present installation frame on which thetechnical components, in particular electrical components, are fastened,is screwed in the same way as the surrounding body. The body is—inparticular in the case of the double-shell type of constructionmentioned with regard to the inner body—either produced from fixedlyinterconnected plates, or from a body frame closed by means of paneling.The outer body is fitted on such an inner body at a distance from it bymeans of paneling.

SUMMARY OF THE INVENTION

a) Technical Object

It is therefore the object of the present invention to provide a methodfor exchanging, in particular increasing the size of, the body of adistribution cabinet and also a construction kit for this, the exchangeof which body is unproblematical and with which method the distributioncabinet remains at the original location and consequently no newinstallation approval or construction approval is necessary.

b) Solution Achieving the Object

By slipping a new base and also a new body—after removal of the oldbody—over the old components enclosed by the switch cabinet, that is tosay leaving the old base and the transmission equipment mounted on it,that is to say the technical, in particular electrical functional parts,in their place, no disconnection from the power supply system, that isdisconnection of the technical, in particular electrical, functionalelements, inside the switch cabinet is necessary.

Since the switch cabinet remains in its existing position and only theoutside dimensions of the new body increase to a greater or lesserextent, generally no new official installation approval is necessaryeither.

By removing the ground from around the base, but preferably not quite asfar as the lower edge of the old base, not only does the old base remainin its position, but usually it is also not entirely deprived of itsstability during the conversion work, with the result that there is noreason to fear that the stripped old switch cabinet may tip over duringthe work.

However, if need be it is possible at any time for the stripped oldswitch cabinet to be destabilized deliberately—by removing the grounddown to the lower edge of the old base—in order to set it straightagain—for example if it is tilted—or else move it slightly from where itis located. The latter is often necessary for example whenever the oldswitch cabinet was positioned with its rear side too close to anexisting building, garden wall or the like, and must be shifted a fewcentimeters away from there to slip the new switch cabinet over it.

Slipping over the new base box, which is hollow in plan view andpreferably in the form of a closed box profile, and in particular thebase feet projecting preferably laterally outward from the base box,have the effect of increasing the size of the standing area of thelatter in such a way that secure support in the ground isensured—despite the smaller installation depth.

The base is in this case preferably assembled before it is slipped over,from the usually one-piece, but possibly also multi-part, base box andthe base feet, the base feet preferably in turn comprising base-footside parts and a base-foot plate which is continuous on each side, andconsequently for two side parts.

For transport, the base feet are often already fastened to the base box,but turned by 180° with respect to a vertical axis, with the result thatthe base-foot plate does not project outward beyond the base box. Inthis transporting position, the base can also be used in the case wherea distribution cabinet is newly constructed.

This on the one hand reduces the transporting volume of the base and onthe other hand allows the parts to be produced from the most favorablematerial in each case, for example the base-foot plates from galvanizedsheet-steel meshes or plastic meshes, while the base-foot side parts maybe bent sheet-steel parts. The base box itself consists for example ofconcrete, plastic, metal or a mixture of these materials.

The production of the base-foot plates as mesh parts and in particularfrom plastic has proven to be advantageous for several reasons: on theone hand, the mesh form makes it possible for the base to be vibratedand consequently leveled exactly horizontally in a simple way. If thisbase-foot plate consists of plastic, apertures and cutouts can be madein a simple way in the plate on site, for example to accommodate cablesleading away from the distribution cabinet.

Once the base has been aligned, in particular horizontally, but alsoapproximately in its lateral distance from the old base, placement ofthe new body on the new base takes place in that the new body is raisedby a crane, in particular the loading crane of the delivery truck, bymeans of lifting lugs screwed into the body, and slipped from above overthe electrical components enclosed by the old switch cabinet—which hasbeen freed of its old housing—and also over its base, since the new basegenerally rises up less far than the old base, with the result that thenew body also extends vertically over part of the old base. Generally,further work will necessitate removal of the outer cladding of the newbody, that is to say of the outer side walls, rear wall and doors,which, depending on the size and weight of the new body, can take placebefore or after it is slipped over.

By contrast, the removal of the roof module, usually comprising an uppercover and an upper intermediate part located under said cover, whichrests on the intrinsically stable main part of the new body, isgenerally essential, since, for the slipping-over operation, the liftinglugs for attaching the crane are screwed into this main part of the newbody from above, or fastened in some other way.

For this purpose, when the new body is delivered, the roof module isonly loosely in place and not already fixedly connected to the rest ofthe body.

After connecting, in particular screwing, the new body to the new base,in particular the lower edge of the new body to the upper edge of thenew base, the new body—and consequently also the new base alreadyconnected to it—is brought to the desired distance from the old base inthe horizontal direction, preferably by means of horizontally lyingadjusting screws in the new body.

For this purpose, the body, and in particular the body frame of the newbody, has horizontally running cross struts just below the height of theupper edge of the body, to which or through which, by means ofhorizontal threaded bores, the adjusting screws can be screwed fromoutside and support themselves on the outer surface of the old base.

Preferably, the old installation frame, on which the transmissionequipment is mounted, is also detached from the old base, in particularby unscrewing or extracting the connecting screws, and instead fixed, inparticular screwed, with respect to the new body.

This takes place for example by means of the known perforated strips ofmetal or plastic, which on the one hand are screwed to the oldinstallation frame, and on the other hand to the new body on the innerside, in particular to the body frame of the latter. For this purpose,sliding blocks in undercut grooves, which run along the edge profiles ofthe body frame, can be screwed in particular to such a body frame.

Such fixing preferably takes place in the upper region of the oldinstallation frame and, if appropriate, in its lower region. The use ofthe perforated strips allows different forms and positions of the oldinstallation frames to be fastened to the new body.

In addition, the EMC-proof shielding is achieved, in that the gapbetween the old base and the new body, which is peripheral whenconsidered in plan view, is closed by an EMC seal—acting on the upperside of the old base.

If the new body surrounds the old base only at a small distance, thistakes place by adhesively attaching a strip of metal foil, for example abitumen strip covered with aluminum foil, which rests with its one edgeon the upper side of the old base and with the other edge on the crossstruts extending at this height of the body frame of the new frame.

If the new body serves for increasing the size of the interior space fornew technical or electrical components, the then larger open surfacearea next to the old base is closed by means of a corresponding plateconsisting of metal or covered with metal.

In the additional interior space there is already—preferably alreadyconnected to the new body and in particular the body frame of thelatter—a new installation frame for receiving the new electricalcomponents.

Finally, the new body, previously stripped of its cladding for betteraccessibility, is provided with panels again, that is to say the sidewalls are suspended from the top on the outside, and so is the rearwall, and the folding doors are fitted by pushing in from the top thehinge rod which extends over the entire height of the door and is passedthrough both by hinge lobes of the side part and by hinge lobes of thedoor.

In this respect, care must be taken in particular not to damage theperipheral, combined splash-water and EMC seal, arranged in the doorsand/or in the housing frame, which preferably consists of a customarysoft plastic or rubber material, preferably of a hollow cross section,as the splash-water seal, and on the outer surface of which a metallizedfoil, or a foil that contains a metal gauze and is preferablyself-adhesive, is applied as the EMC seal.

Finally, the roof module is placed on, positively engaging with itslower edge over the upper edge of the side walls and rear wall. The roofmodule in this case reaches down with securing continuations, which havea transverse bore, between the housing frame and the outer side wall.The roof module is secured against lifting off when the doors are fullyopened, in that a securing bar is respectively pushed in horizontallyfrom the front in the intermediate space between the housing frame andthe side wall of the housing in such a way that it positively engagesthrough both the bores of the securing continuations of the roof moduleand corresponding bores of analogous securing continuations projectingoutward from the housing frame. After closing and barring the doors,this securing bar is no longer accessible from the outside, consequentlycannot be removed, in order that the roof module is not taken off, andas a consequence the side walls and the rear wall are also not detachedupward, and—as long as the lock is not destroyed—the front doors are notopened either.

BRIEF DESCRIPTION OF THE DRAWINGS

An embodiment according to the invention is described in more detailbelow by way of example. In the drawing:

FIG. 1 shows the slipping-over of the new base,

FIG. 2 shows the slipped-over, set-down new base,

FIG. 3 shows the slipping-over of the inner body,

FIG. 4 shows the slipped-over, set-down and fastened inner body,

FIG. 5 shows the inner body provided with peripheral cladding plates,

FIG. 6 shows the roof module additionally placed on;

FIG. 7 shows the inner body on its own,

FIG. 8 shows it provided with side parts,

FIG. 9 shows it with additional cladding at the front and rear in thelower region,

FIG. 10 shows it with an additionally attached rear wall and frontdoors,

FIG. 11 shows it with the roof module to be additionally placed on,

FIG. 12 shows it in the ready assembled state of the body and

FIG. 13 shows the base on its own.

DETAILED DESCRIPTION

Before the procedure involved in slipping over the new distributioncabinet is explained on the basis of FIGS. 1 to 6, its individual parts,namely the new base 2 and the new body 3, are described individually onthe basis of FIGS. 7 to 13, and the different states of construction ofthe new body 3 are thereby explained on the basis of FIGS. 7 to 12.

FIG. 13 shows the new base 2, which is screwed together from a number ofindividual parts:

On the one hand, the base box 2 a, which is hollow, that is to say openright through when viewed in plan view, and generally consists ofplastic, concrete, a mixture of the two or some other non-rustingmaterial. Fastened under its outer side regions in the transversedirection 20, of the greater transverse extent of the base box 2 a, arebase feet 2 b, with which the base box 2 a is set down on the underlyingground, which is removed for this purpose down to the desired level.

The base feet 2 b comprise base-foot plates 2 d, preferably made of anintrinsically stable mesh, in particular a mesh of galvanized sheetsteel with vertical ridges or a plastic mesh. These plates have a widthpreferably corresponding exactly to the horizontal depth, that is width,of the base box 2 a and project laterally beyond the base box 2 a in thetransverse direction 20. When viewed in plan view, the plates 2 d reachonly under the side walls of the base box 2 a, in a way corresponding tothe thickness of said walls, with the result that the free space in thebase box, when viewed in plan view, is not made any smaller by this.

The plates 2 d are fastened in this position with the aid of in eachcase two approximately triangular side parts 2 c, which are screwed byone of their two right-angled outer edges to the plate 2 d, inparticular to the upper side of the latter, and are connected by thetapering upper region to the base box 2 a and in this way position theplates 2 d underneath the base box 2 a and at a distance from it.

The plates 2 d serve for increasing the size of the standing area withrespect to the base area of the peripheral parts, only narrow in planview, of the one-piece or vertically or horizontally divided,multi-piece base box and can theoretically also project outward at thefront and rear sides instead of at the outer narrow sides in thetransverse direction, or on all four sides. However, the result of astanding area of optimum size with only relatively little necessaryexcavation of the earth around the old base is obtained when the platesare fastened such that they project in the transverse direction beyondthe sides of the base box 2 a.

FIGS. 7 to 12 show the increasingly completed construction phases of thenew body 3. The inner body has a cubic form and is intrinsically stableon account of a body frame 16 which is made up of edge profiles 17,which are interconnected, in particular screwed, at their ends, inparticular in the corners of the body frame 16, by means ofcorresponding corner connectors.

In addition to the edge profiles 17, cross struts 34 run horizontallyalong the edges of the cuboidal inner body 21 around the peripherybetween the vertical struts in the lower third of the body frame 16, andadjusting screws 13 are likewise arranged horizontally, directed fromthe outside inward against said cross struts.

The adjusting screws 13 are in this case arranged in pairs, spaced apartfrom one another, respectively on the front and rear cross struts 34running in the transverse direction, preferably also one each in themiddle of the short cross struts running transversely in relation to thetransverse direction 20.

The body frame 16 is closed at the sides, at the rear side and at theupper side by preferably EMC-proof plates, which preferably lie in therange of the thickness of the edge profiles 17, so that only the frontside, in particular in this case only the region lying above the crossstruts 34, is open, as well as the base area between the edge profiles17 running around the periphery at the bottom.

Shown lying on the upper paneling are two screw-in lifting lugs 12,which if need be, that is for lifting this inner body 21, can be screwedinto upwardly directed internal threads 22 that are open at the top oftwo diagonally opposite upper corner connectors of the body frame 16.

FIG. 8 show by contrast a state in which the inner body 21 as describedis already fitted with side walls 8, which are placed from the outsideagainst the side faces of the inner body 21 and by lowering arepositively connected to the latter, or fastened in some other way.

FIG. 9 shows a state in which, by contrast with the fittings accordingto FIG. 8, a front flap 23 and a rear flap 24—which like the side walls8 and the rest of the cladding preferably consist of plastic—cover thefront and rear lower regions of the inner body 21, in that they arelikewise placed from the outside against the latter, preferably withpositive engagement, or fastened in some other way and, as a result,close at the front and rear the region from the peripheral cross strutsin the lower third to the lower end of the body frame 16, whereas theside walls 8 of course preferably extend over the entire height of thebody frame 21.

FIG. 10 show a state in which the inner body 21 is additionally fittedwith a rear wall 11 and front doors 4 a, b. The doors 4 a, b are in thiscase hung in corresponding hinges as a pivot axis on the longitudinalouter edges of the front side, while the rear wall 11 is in turnfastened from the outside by hanging from above or in some other way.

As the plan views 10 d and 9 d show in particular, the rear wall 11 andside walls 8 are positioned such that they are offset by a distanceoutward with respect to the inner body 21—open at the top and bottom—,so that air can flow upward in between as a result of the chimneyeffect.

For the same reason, the doors 4 a, b are formed in a double-walledmanner with through-openings from the bottom to the top, the inner wallof the doors 4 a, b in turn preferably being formed in an EMC-proofmanner.

FIG. 11 show the state of the body 3 during completion by placing on theroof module 50, which comprises an upper intermediate part 7 and a cover5, and preferably downwardly protruding continuations 25 serve forpushing into the remaining body 3, in particular between the inner body21 and the outer cladding of the latter, and screwing to the inner body21, in particular its body frame 16.

Since the roof module 50, when viewed in plan view, protrudes beyond theinner body 21 and also covers the rear wall 11, side walls 8 and thedoors 4 a, b in the closed state, the fixed roof module 50—as shown inthe final state of FIG. 12—prevents these parts from being raised upwardand consequently prevents their removal from the inner body 21.

FIG. 1 show the pushing of the base 2, represented in FIG. 13, over theold installation frame 6, loaded with technical or electrical functionalparts, and the old base 2′, which supports said frame and to which it isconnected by means of fastening screws 18.

The technical or electrical functional elements usually screwed andwired to the old installation frame 6 are not shown for reasons ofoverall clarity, but instead just the cable inlets 27 in the base plate36 of the installation frame 6 are shown. However, when viewed in planview, the electrical functional parts that are not shown do not protrudelaterally beyond the base area of the old base 2′, since, before theremoval of the old body (not shown here), which rested on the outerperiphery of the old base 2′, they were of course enclosed by said oldbody.

FIG. 2 show the final position of the new base 2, set down on theunderlying ground, after it has been slipped over. As FIG. 2 b shows inparticular, the new base 2 is much less high than the old base 2′. Sincethe ground level, that is to say the normal level of the ground surface,can be seen on the old base 2′, the ground is removed around the oldbase 2′, in particular in the transverse direction to the sides of theold base 2′, to such a depth that the new base 2 can be placed in theremoved region with its standing plates 2 d on the new standing level 29created in this way, which is chosen such that the upper edge of the newbase 2 is at the height of the previous ground level 40.

Depending on the depth of submergence of the old base 2′, this newstanding level may lie, as shown in FIG. 2, just beneath the standinglevel of the old base 2′ or else above it, the new standing level 29preferably being chosen such that it is above the old standing level, inorder not to have to dig around the old base 2′ until it is completelyfree, which reduces the stability of the old base 2′, and consequentlyof the old switch cabinet, during the conversion work.

At the same time there is the possibility of varying the height of thenew base 2 by means of base side parts 2 c of different heights.

The plan view of FIG. 2 d also shows that the width of the new base,when viewed in plan view, that is to say transversely in relation to itstransverse extent 20, is only of such a size that the inner, free spaceof the new base 2 that can be slipped over, that is to say in particularits base box 2 a, is just slightly greater than the outer width of theold base 2′.

In the transverse direction 20, the new base 2 may likewise just fitover the old base 2′ or—as shown in FIG. 2—be much larger, in order tocreate space for the new installation frame next to the old installationframe 6 at a later time. For this reason, the new base 2 is then slippedover the old base 2′ in such a way that the latter bears with one of itssides closely against the lateral (right or left) inner periphery of thenew base 2, in particular its base box 2 a, and the additional interiorspace is consequently available only on one side of the old installationframe 6, that is in one piece.

Once the new base 2 has been set down and aligned horizontally at thecorrect height in this way, the body 3, in particular only its innerbody 21—preferably hanging from a crane hook—is slipped from above overthe old installation frame 6, so that the latter is completelysurrounded by the new inner body 21. The body 3, in particular its innerbody 21, is thereby lowered until it rests on the upper side of the newbase 2, and subsequently screwed to the latter by means of fasteningscrews 18.

Preferably—when viewed in plan view—the inner body 21 does not in thiscase protrude laterally beyond the outer periphery of the base box 2 a,as can be seen from FIG. 4, after fastening by means of the fasteningscrews 18 between the inner body 21 and the new base 2.

FIG. 5 shows the state of the new body 3 analogous to FIG. 10, that isto say with fitted outer cladding on the inner body 21 in the form ofthe side walls 8, the rear wall 11 and the two outer-attached frontdoors 4 a, b. As the front view of FIG. 5 b and the plan view of FIG. 5d show in particular, the outer periphery of the new body 3 fitted outin this way is greater than the outer periphery of the new base box 2 a,so that the side walls 8 extend over the entire height of the inner body21 and of the base box 2 a, and also the front flap 23′ and the rearflap 24′ that are used cover in terms of height not only the lowerregion of the inner body 21, that is to say from the cross struts 34downward, but also the part lying thereunder of the new base box 2 a.

FIG. 5 a also shows the new installation frame 6 a, which is fastenedsuch that it laterally adjoins the old installation frame 6 in the innerbody 21 of the new body 3, which according to FIG. 4 a may take placealready before the slipping-over of the new inner body 21 or of the newbody 3, or else subsequently.

Similarly—as a departure from FIGS. 1 to 6—the inner body 21 may beslipped over when already paneled with side walls, a rear wall and afront flap and rear flap, that is to say in the state which can be seenin FIG. 5.

FIG. 5, in particular FIG. 5 c, also show the fixing of the oldinstallation frame 6, in particular in the upper region—to the new body3, which preferably takes place by means of screwing a piece ofperforated strip 14, which preferably consists of metal or plastic, themiddle region of which is screwed to the upper end, for example, of theold installation frame 6, and the ends of which that point obliquelyupwards to the front and rear are screwed to the front and rear edgeprofiles 17, running in the transverse direction 20, of the body frame16, preferably by screwing to sliding blocks 17, which are displaceablein corresponding undercut grooves along these edge profiles 17.

FIG. 6 shows the final state, that is to say—once the lifting lugs 12have been removed again—after placing the roof model 50 onto the upperside of the remaining new body 3 and connection to the latter.

LIST OF DESIGNATIONS

-   1 distribution cabinet-   2, 2′ base-   2 a base box-   2 b base foot-   2 c base side part-   2 d base plate-   3, 3′ body-   4 door-   5 cover-   6 installation frame-   7 upper intermediate part-   8 side wall-   9 subrack-   10 vertical longitudinal direction-   11 rear wall-   12 lifting lug-   13 adjusting screw-   14 perforated strip-   15 sliding block-   16 body frame-   17 edge profile-   18, 18′ fastening screw-   19 metal foil-   20 transverse direction-   21 inner body-   22 internal thread-   23, 23′ front flap-   24, 24′ rear flap-   25 continuations-   26 base plate-   27 cable inlet-   28 lines-   29 new standing level-   34 cross struts-   40 ground level-   50 roof module

1. A method for exchanging an old body of a distribution cabinet with anew body, the distribution cabinet including the old body, an old base,and an old installation frame set up outdoors, the method comprising:(a) removing the old body of the distribution cabinet, (b) slipping anew base, which is hollow when viewed in plan view, over the oldinstallation frame and the old base and setting the new base down on anunderlying ground, and (c) slipping the new body, which has at least asmuch interior space as the old body, from above over the oldinstallation frame.
 2. The method as claimed in claim 1, wherein beforethe new base is slipped over, the ground around the old base is removed.3. The method as claimed in claim 1, wherein, before the new base isslipped over, the new base is assembled from a base box, which is hollowin plan view, and base feet, which protrude laterally, mounted under thebase box.
 4. The method as claimed in claim 1, wherein electricalcomponents enclosed by the cabinet remain in operation while the oldbody is being exchanged for the new body, wherein exchanging the oldbody for the new body increases the cabinet in size.
 5. The method asclaimed in claim 1, wherein, before the step of slipping over the newbody, a roof module is removed from the new body and lifting lugs areattached in an upper side of the new body.
 6. The method as claimed inclaim 1, wherein cladding, which includes doors, side walls and a rearwall, is removed from the new body and is replaced before completion ofthe exchange.
 7. The method as claimed in claim 6, wherein after thecladding has been replaced on the new body, and after lifting lugs areremoved, a roof module is placed on and fixed to the new body, wherein alower edge of the roof module engages with the side walls and the rearwall of the new body, and the roof module is positively fixed withrespect to an inner body, which comprises a body frame, by pushing insecuring bars horizontally from a front of the new body in anintermediate space between the inner body and one of the side walls withthe doors open, the securing bars passing through securing continuationsboth of the roof module and of the inner body and consequentlypositively connecting them to one another.
 8. The method as claimed inclaim 6, wherein, after the new body has been slipped over and beforethe cladding is replaced, the new body is mechanically fixed in relationto at least one of the old installation frame and the old base.
 9. Themethod as claimed in claim 8, wherein the new body is mechanically fixedby screwing in adjusting screws through the new body toward an upperregion of the old base and supporting the adjusting screws on the oldbase.
 10. The method as claimed in claim 8, wherein the new body ismechanically fixed by clamping a perforated strip between an upperregion of the old installation frame and an upper region of the newbody, wherein the perforated strip is fastened by sliding blocks, whichare displaceable in a longitudinal direction in edge profiles of the newbody.
 11. The method as claimed in claim 8, further comprising looseningand extracting screws fastening the old installation frame and the oldbase before mechanically fixing the new body with respect to the oldbase or the old installation frame and immediately after removal of theold body.
 12. The method as claimed in claim 1, further comprisingenclosing free space between an inner periphery of the new body and anouter periphery of the old base, adjacent an upper edge of the old base,in an EMC-proof manner by a strip of metal foil, including aself-adhesive strip, after the new body has been slipped over the oldinstallation frame.
 13. The method as claimed in claim 1, furthercomprising installing and electrically connecting an additionalinstallation frame and additional components in the new body after thenew body has been slipped over the old installation frame, whereinelectrical components of the old installation frame are disconnectedonly during the connection of the additional components.
 14. Aconstruction kit for a new, slip-cover switch cabinet unit comprising: anew base, the new base including releasably interconnected parts,including at least one base box and base feet, the base box being hollowin plan view, and the base feet being arranged under side parts of thebase box and projecting laterally beyond the base box, a new body, atleast one new roof module, side walls, a rear wall, and at least onedoor cladding the new body, and at least one lifting lug on the newbody.
 15. The construction kit as claimed in claim 14, furthercomprising perforated strips for fixing an old installation frame to thenew body.
 16. The construction kit as claimed in claim 14, furthercomprising adjusting screws for setting a distance between the new bodyand an old base or an old installation frame.
 17. The construction kitas claimed in claim 14, further comprising base cladding for an old baseincluding at least one front base cladding.
 18. The construction kit asclaimed in claim 14, wherein the base feet comprise base-foot side partsand a base-foot plate.
 19. The construction kit as claimed in claim 14,wherein the new body comprises an EMC shielding.
 20. The constructionkit as claimed in claim 14, wherein the new base has a smaller heightthan an old base.
 21. The construction kit as claimed in claim 14,wherein the new body comprises a body frame of metal profiles arrangedat locations inward from edges of a cubic housing, wherein cross strutsrun horizontally around a periphery of the body frame at a top of atransition between an old base and an old installation frame.
 22. Theconstruction kit as claimed in claim 21, wherein vertical positions ofthe cross struts with respect to the new body can be set.
 23. Theconstruction kit as claimed in claim 21, wherein threaded through-borespass horizontally through the cross struts for screwing in adjustingscrews.
 24. The construction kit as claimed in claim 21, wherein thebody frame includes struts running around horizontally at a top of thebody frame, the struts including undercut grooves with inserted slidingblocks, which comprise internal threads for screwing in perforatedstrips.
 25. The construction kit as claimed in claim 14, wherein theside walls and the rear wall of the new body extends over an entireheight of the new body.
 26. The construction kit as claimed in claim 14,wherein internal threads are arranged in an upper side of the new body,which remains after removal of the roof module, in at least two cornersthat lie diagonally opposite each other.
 27. The construction kit asclaimed in claim 14, further comprising EMC sealing strips in the formof a self-adhesive metal foil.